My feet cramp up horribly for the first 2 or 3 runs of the day, and then they are fine the rest of the day. Usually I will loosen up my boots a bit in the morning, and then tighten them later in the day once my feet have adjusted. I feel like this probably just due to not riding enough, but maybe it could be corrected with proper insoles. I just won a pair of shredsoles from Shay, so maybe I will find out soon